Creeper World 4, the latest game in development by KnuckleCracker, now has a demo available to everyone on steam! Looks to have 8 missions.
From the developer of Creeperworld 1-3, and Particle Fleet, comes the newest iteration of the Creeper genre, this time in a 3d world! For those who haven't played any of his games, the enemy is a fluid that slowly fills the map. You must destroy the creeper to save the world in this Real Time Strategy game (with Pause).
If you enjoy this demo, consider playing Creeper World 3, it's the best of the series in my opinion.
(I hope this qualifies for User Submitted News, I'm super excited about this game and want to share the love!)
Source / Steam Page